EP 2104059 A1 20090923 - Apparatus and method for processing image
Title (en)
Apparatus and method for processing image
Title (de)
Vorrichtung und Verfahren zur Bildverarbeitung
Title (fr)
Appareil et procédé de traitement d'image
Publication
Application
Priority
JP 2008066555 A 20080314
Abstract (en)
An image processing apparatus includes a data storage section configured to store an image data of a streaked pattern image as a gray-scale image and a direction distribution data indicating a direction distribution of a streaked pattern noise in a first area of the streaked pattern image; and a first image enhancing section configured to execute a first image enhancing process in the first area. The direction distribution data relates a first position as a position of a first pixel in the first area and a first direction as a direction of the streaked pattern noise in the first position. The first image enhancing section determines a first reference area as a local area which contains the first pixel based on the first direction such that the first reference area is contained in the first area, and calculates a post-process density as a density after the first image enhancing process in the first pixel based on a first density histogram in the first reference area.
IPC 8 full level
CPC (source: EP US)
G06T 5/40 (2013.01 - EP US); G06T 5/70 (2024.01 - EP US); G06V 10/273 (2022.01 - EP US); G06V 40/1347 (2022.01 - EP US); G06T 2207/20008 (2013.01 - EP US); G06T 2207/20104 (2013.01 - EP US); G06T 2207/30196 (2013.01 - EP US)
Citation (applicant)
- JP H07121723 A 19950512 - NIPPON DENKI SECURITY SYST KK
- JP 2002099912 A 20020405 - NIPPON TELEGRAPH & TELEPHONE
- JP 2007226746 A 20070906 - NEC CORP
- JP 2008052602 A 20080306 - NEC CORP
- "Background Pattern Removal by Power Spectral Filtering", APPLIED OPTICS, 15 March 1983 (1983-03-15)
- LIN HONG; YIFEI WANG; ANIL JAIN: "Fingerprint Image Enhancement: Algorithm and Performance Evaluation", IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1998
- UNIFORM RESOURCE LOCATOR, January 2008 (2008-01-01)
Citation (search report)
- [A] US 2008031531 A1 20080207 - HARA MASANORI [JP]
- [A] GB 2281799 A 19950315 - NEC CORP [JP]
- [A] ANGELO CHIANESE ET AL: "Improving Minutiae Detection in Fingerprints Using Multiresolution Contrast Enhancement", IMAGE ANALYSIS AND RECOGNITION LECTURE NOTES IN COMPUTER SCIENCE;;LNCS, SPRINGER, BERLIN, DE, vol. 4142, 1 January 2006 (2006-01-01), pages 274 - 285, XP019043787, ISBN: 978-3-540-44894-5
- [A] GREENBERG S ET AL: "Fingerprint image enhancement using filtering techniques", PATTERN RECOGNITION, 2000. PROCEEDINGS. 15TH INTERNATIONAL CONFERENCE ON SEPTEMBER 3-7, 2000; [PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION. (ICPR)], LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, vol. 3, 3 September 2000 (2000-09-03), pages 322 - 325, XP010533293, ISBN: 978-0-7695-0750-7
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2104059 A1 20090923; EP 2104059 B1 20110112; DE 602009000549 D1 20110224; JP 2009223562 A 20091001; JP 5007953 B2 20120822; US 2009232397 A1 20090917
DOCDB simple family (application)
EP 09155194 A 20090316; DE 602009000549 T 20090316; JP 2008066555 A 20080314; US 40373109 A 20090313